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UNIT 4- CHEMISTRY Elements and Periodic Table Flashcards | StudBud
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UNIT 4- CHEMISTRY Elements and Periodic Table
UNIT 4- CHEMISTRY Elements and Periodic Table
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#periodictable #atomicstructure #isotopes #metalsnonmetalsmetalloids
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1
Atoms with the same number of protons and different number of neutrons are called....
alkali earth metals
elements
isotope
metalloid
2
Isotopes differ in ______________, not atomic number
mass
protons
volume
density
3
An elements mass number is the mass of ....
protons + electrons
atoms + neutrons
neutrons + protons
electrons + nucleus
4
What does each row of the periodic table have in common?
same type of isotopes
same atomic mass
same properties
same number of electron shells
5
Of the following, the group that contains elements that are most reactive are
alkali metals
carbon family
transition metals
noble gases
6
The atomic number of an element is determined by the number of
neutrons
protons
nuclei
isotopes
7
The illustration shows an experiment performed by which scientist?
Rutherford
Crookes
Dalton
Thomson
8
What number is always increasing on the modern day periodic table?
atomic number
the amount of metals
number of electrons in outermost shell
number of isotopes
9
What is the smallest particle that can still be considered an element
proton
electron
atom
molecule
10
How many neutrons are in the nucleus of an atom with atomic number 25?
24
37
25
30
11
Elements in a column form a ____________on the periodic table.
period
property
group
friend
12
Who is credited with discovering the first version of the periodic table.
Thomas Rutherford
Dimitri Mendeleev
Niels Bohr
John Dalton
13
What is the mass number of the atom that is pictured
3
9
1
6
14
Which family of elements on the periodic table contain the most reactive metals?
noble gases (group 18)
transition metals
halogens (group 17)
lanthanides
15
How many neutrons does this element have?
95
101
157
258
16
What is the atomic number of the atom pictured?
9
6
3
1
17
Who's contribution to Atomic Theory is depicted
Dalton
Thomson
Rutherford
Democritus
18
On the periodic table, electrons are added going to what position
up
right
down
left
19
How many protons does this element have?
101
258
95
157
20
Hydrogen has 3 naturally occurring isotopes. Which describes the relationship of these isotopes
same mass, different atomic number
same mass, same atomic number
different mass, different atomic number
different mass, same atomic number
21
An electron's movement is related to its ________________
element
energy level
charge
electrons
22
which element in period 4 would have chemical properties similar to Oxygen?
Phosphorus
Nitrogen
Sulfur
Selenium
23
Two isotopes of an element have the same number of protons but different _____________
electrons
elements
electron shells
neutrons
24
Based on the figure above, what does the number 83.80 tell about each krypton atom?
number of neutrons and protons in one isotope of an element
weighted average mass of the isotopes of an element
average number of neutrons in the isotopes of an element
number of neutrons in one isotope of an element
25
If Carbon has atomic number of 6, how many neutrons does the isotope Carbon-12 have?
12
6
18
24
26
What element is pictured?
Sodium
Flourine
Neon
Calcium
27
The positively charged particles in an atoms nucleus are called ______________
electrons
neutrons
protons
elements
28
In the modern periodic table, the elements are in order by _______________
atomic mass
number of neutrons
atomic number
alphabetical
29
Which Scientist's contribution to atomic theory is depicted
Thomson
Rutherford
Bohr
Dalton
30
How many neutrons does this element have?
75
107
42
33
31
If an atom has 35 protons in its nucleus how many electrons will it have orbiting the nucleus?
34
1
35
8
32
The periodic table is arranged in rows called
family
periods
groups
columns
33
Elements that are in the same group have similar...
melting points
properties
electron shells
energy levels
34
The flame test helped to prove who's contribution to atomic theory?
Thomson
Dalton
Bohr
Rutherford
35
Which atom has 47 protons in its nucleus?
Titanium
Strontium
Silver
Potassium
36
Which element has 56 protons?
Iron
Chromium
Barium
manganese
37
What part or parts of an atom accounts for most of its mass?
electrons only
protons and neutrons
protons only
electrons and neutrons
38
which element has 2 more protons that Nickel?
Platinum
Zinc
Iron
Palladium
39
The center of at atom is called the ___________
neutron
nucleus
proton
electron
40
which elements are noble gases?
Oxygen and Sulfur
Neon and Argon
Beryllium and Calcium
Flourine and Chlorine
